Hair brush and related method for storing and applying hair care treatments

ABSTRACT

A hair brush may include a body, a number of bristles extending away from the body, and a replaceable cartridge removably attached to the body. The cartridge may include a housing, a reservoir positioned at least partially within the housing, and an applicator positioned at least partially within the housing. The reservoir may be configured to store a hair care treatment therein and may include a first porous material. The applicator may be configured to apply the hair care treatment to hair of a user and may include a second porous material. The hair care treatment may be optimized for delivery via the reservoir and the applicator.

RELATED APPLICATIONS

This application claims priority under 35 U.S.C. § 119 to U.S. Provisional Patent Application No. 62/513,353 filed May 31, 2017, and titled “Hair Brush and Related Method for Storing and Applying Hair Care Treatments,” the entire contents of which are hereby incorporated herein by reference for all purposes.

TECHNICAL FIELD

The present disclosure relates generally to hair-styling implements and methods for styling a user's hair and more particularly to a hair brush having a replaceable cartridge for storing and applying hair care treatments and a related method for using the hair brush to store and apply hair care treatments to the hair of a user.

BACKGROUND

Various types of hair brushes and other implements are known in the art for styling a user's hair. A hair brush generally may include a body and a number of bristles extending from the body and configured to engage the hair of a user for styling. The body may include a handle configured to allow a user to conveniently grasp the hair brush, and a head configured to support the bristles and to allow the user to guide the bristles through the hair, as desired. According to different configurations, the handle, the head, and the bristles may have a variety of shapes, arrangements, and characteristics to facilitate use of the hair brush in styling a user's hair. During use of the hair brush, a user may grasp the handle and move the head of the brush along the user's head such that the bristles pass between respective hairs of the user and a bristle-carrying side of the brush head passes along the user's hair.

Conventional hair brushes may be used for many different hair care purposes, including smoothing hair, detangling hair, straightening hair, or curling hair. For various reasons, a user may desire to apply a hair care treatment, such as a hair oil or other substance, to the user's hair. In some instances, a user may apply the hair care treatment to the hair by hand after using a conventional hair brush to brush the hair. In this manner, the user's hands may be used to distribute the treatment throughout the hair. In other instances, a user may apply the hair care treatment to a conventional hair brush and then pass the brush through the hair to distribute the treatment. Either approach, however, may present certain problems. For example, applying a hair care treatment by hand may result in uneven distribution of the treatment throughout the hair and/or may result in waste of some of the treatment which contacts and adheres to the user's hands. Further, use of a conventional hair brush to apply a hair care treatment to a user's hair may result in uneven distribution of the treatment throughout the hair, may result in waste of some of the treatment which contacts and adheres to portions of the brush, and/or may compromise the function of the bristles of the brush. Further, it may be time-consuming and cumbersome to apply a hair care treatment by hand or to use a conventional hair brush to apply a hair care treatment to a user's hair.

Various types of hair brushes have been developed specifically for applying a hair care treatment to a user's hair while brushing the hair. For example, certain hair brushes may include a porous component for storing a hair care treatment and releasing the treatment onto a user's hair as the brush is passed therethrough. In some instances, the porous component may be removably attached to a mating portion of the hair brush, such that the component may be replaced with a new component or refilled with additional hair care treatment and reattached for continued use of the hair brush. Although such hair brushes may provide some advantages in applying hair care treatments to a user's hair, as compared to conventional hair brushes, their use still may present certain problems. For example, when the porous component is loaded with a hair care treatment, some of the treatment may undesirably leak or otherwise be released from the component during storage, shipment, and/or attachment of the loaded component to the hair brush. In this manner, handling and attachment of the porous component may cause some of the hair care treatment to be released onto product packaging, portions of the hair brush, and/or a user's hands or clothes, which may result in waste of the treatment and a mess for the user to clean up. As another example, a delivery rate of the hair care treatment from the porous component may vary significantly over a life of the component, which may result in uneven distribution of the treatment throughout a user's hair unless the user appreciates and compensates for the varying delivery rate. Additionally, the porous component may be unable to release all or substantially all of the hair care treatment loaded thereon, which may result in waste of the treatment and user frustration. In some instances, the porous component may be relatively large and formed of an expensive material, which may result in a high cost of the component and/or the overall hair brush. Finally, the nature and/or configuration of the porous component may require a complicated mechanism for securely retaining the component with respect to a remainder of the hair brush, which may make the brush confusing or cumbersome to use and may result in user frustration.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description is set forth with reference to the accompanying drawings. The use of the same reference numerals may indicate similar or identical items. Various embodiments may utilize elements and/or features other than those illustrated in the drawings, and some elements and/or features may not be present in various embodiments. Elements and/or features in the drawings are not necessarily drawn to scale. Throughout this disclosure, depending on the context, singular and plural terminology may be used interchangeably.

FIG. 1A is a top perspective view of a hair brush in accordance with one or more embodiments of the disclosure.

FIG. 1B is an exploded top perspective view of the hair brush of FIG. 1A.

FIG. 1C is a top view of a body of the hair brush of FIG. 1A.

FIG. 1D is a bottom view of the body of the hair brush of FIG. 1A.

FIG. 1E is a top perspective view of the body of the hair brush of FIG. 1A.

FIG. 1F is a bottom perspective view of the body of the hair brush of FIG. 1A.

FIG. 1G is a top view of a latch of the hair brush of FIG. 1A.

FIG. 1H is a bottom view of the latch of the hair brush of FIG. 1A.

FIG. 1I is a top perspective view of the latch of the hair brush of FIG. 1A.

FIG. 1J is a bottom perspective view of the latch of the hair brush of FIG. 1A.

FIG. 1K is a top perspective view of a pair of the latches assembled to the body of the hair brush of FIG. 1A.

FIG. 1L is a bottom perspective view of the latches assembled to the body of the hair brush of FIG. 1A.

FIG. 1M is a top view of a face plate of the hair brush of FIG. 1A.

FIG. 1N is a bottom view of the face plate of the hair brush of FIG. 1A.

FIG. 1O is a bottom perspective view of the face plate of the hair brush of FIG. 1A.

FIG. 1P is a top view of a door of the hair brush of FIG. 1A.

FIG. 1Q is a bottom view of the door of the hair brush of FIG. 1A.

FIG. 1R is a top perspective view of the door of the hair brush of FIG. 1A.

FIG. 1S is a top perspective view of a cartridge of the hair brush of FIG. 1A.

FIG. 1T is an exploded top perspective view of the cartridge of the hair brush of FIG. 1A.

FIG. 1U is a top view of the cartridge of the hair brush of FIG. 1A.

FIG. 1V is a cross-sectional side view of the cartridge of the hair brush of FIG. 1A, taken along line 1V-1V of FIG. 1U.

FIG. 1W is a cross-sectional end view of the cartridge of the hair brush of FIG. 1A, taken along line 1W-1W of FIG. 1U.

FIG. 1X is a top view of the hair brush of FIG. 1A.

FIG. 1Y is a cross-sectional side view of the hair brush of FIG. 1A, taken along line 1Y-1Y of FIG. 1X.

FIG. 1Z is a cross-sectional end view of the hair brush of FIG. 1A, taken along line 1Z-1Z of FIG. 1X.

FIG. 2A is a top perspective view of the cartridge of the hair brush of FIG. 1A, illustrating removal of a cover from a housing of the cartridge.

FIG. 2B is a bottom perspective view of the hair brush of FIG. 1A, illustrating removal of the door from the body of the hair brush.

FIG. 2C is a bottom perspective view of the hair brush of FIG. 1A, illustrating insertion of the cartridge into the body of the hair brush.

FIG. 2D is a bottom perspective view of the hair brush of FIG. 1A, illustrating the cartridge inserted into the body of the hair brush.

FIG. 2E is a bottom perspective view of the hair brush of FIG. 1A, illustrating reattachment of the door to the body of the hair brush.

FIG. 2F is a bottom perspective view of the hair brush of FIG. 1A, illustrating the door reattached to the body of the hair brush.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

Described below are example embodiments of a hair brush, individual components and features of the hair brush, as well as a removable, replaceable cartridge containing a hair care treatment that can be used in conjunction with the example hair brush or other similar hair brushes. The hair brush may be used in various applications to store a hair care treatment and to apply the hair care treatment to a user's hair while brushing the hair. The hair care treatment may include one or more hair oils, hair conditioners, hair serums, hair dyes, or other substances used to treat and/or style a user's hair. As described below, the hair brush may include a removable cartridge configured to store and apply a hair care treatment to the hair of a user during use of the brush. When a supply of the hair care treatment stored in the cartridge is depleted, the cartridge may be removed from the hair brush, and a new cartridge preloaded with hair care treatment may be attached to the brush for subsequent use. The cartridge may include a reservoir and an applicator in fluid communication with one another. The reservoir may include a first porous material and be configured to store the hair care treatment therein. The applicator may include a second porous material and be configured to apply the hair care treatment to the hair of a user upon contacting the hair during brushing. The first porous material and the second porous material may have different properties or characteristics from one another to optimize storage of the hair care treatment and delivery of the hair care treatment from the cartridge to a user's hair.

As compared to certain existing hair brushes for applying a hair care treatment to a user's hair, embodiments of the hair brush described herein may inhibit leakage or other undesirable release of the hair care treatment from the brush, may provide a stable and consistent delivery rate of the hair care treatment from the brush over a life of a supply of the hair care treatment, may be able to release substantially all of a supply of the hair care treatment from the brush, may provide even distribution of the hair care treatment throughout a user's hair, may be manufactured at a relatively low cost, may minimize waste of the hair care treatment during loading and use of the brush, and/or may provide a straightforward and simple-to-operate mechanism for loading and reloading the brush with a supply of hair care treatment.

According to one aspect, a hair brush may include a body, a number of bristles extending in one or more directions away from the body, and a cartridge removably attached to the body. The cartridge may include a housing, a reservoir positioned at least partially within the housing, and an applicator positioned at least partially within the housing. The reservoir may be configured to store a hair care treatment therein and may include a first porous material. The applicator may be configured to apply the hair care treatment to the hair of a user and may include a second porous material.

In certain example embodiments, the reservoir and the applicator may abut one another and may be in fluid communication with one another. In certain example embodiments, the first porous material may be a fibrous material, and the second porous material may be a sintered porous plastic. In certain example embodiments, the first porous material may have a first porosity, the second porous material may have a second porosity, and the first porosity may be greater than the second porosity. In certain example embodiments, the first porosity may be within a range of between approximately 59% and approximately 79%, and the second porosity may be within a range of between approximately 33% and approximately 53%. In certain example embodiments, the reservoir may be positioned entirely within the housing, and the applicator may extend out of the housing and away from the body. In certain example embodiments, the applicator may include a base and a number of protrusions extending from the base. The base may be positioned at least partially within the housing, and the protrusions may be positioned at least partially outside of the housing.

In certain example embodiments, the hair brush also may include a latch movably positioned within the body and configured to move between an unlocked position, in which the latch allows removal of the cartridge from the body, and a locked position, in which the latch inhibits removal of the cartridge from the body. In certain example embodiments, the latch may include a main body and a spring, and the spring may be configured to bias the latch toward the unlocked position. In certain example embodiments, the hair brush also may include a door removably attached to the body, and the door may be configured to move the latch to the locked position when the door is attached to the body. In certain example embodiments, the door may include a first protrusion configured to engage a second protrusion of the latch to move the latch to the locked position when the door is attached to the body. In certain example embodiments, the door may include a second protrusion configured to engage the cartridge and inhibit movement of the cartridge relative to the body when the door is attached to the body. In certain example embodiments, the cartridge may include a hair care treatment loaded in the reservoir, and the hair care treatment may include at least one of a hair oil, a hair conditioner, a hair serum, or a hair dye.

According to another aspect, a replaceable cartridge for a hair brush may include a housing, a reservoir positioned at least partially within the housing, a hair care treatment loaded in the reservoir, and an applicator positioned at least partially within the housing. The reservoir may include a first porous material. The applicator may be configured to apply the hair care treatment to the hair of a user and may include a second porous material.

In certain example embodiments, the reservoir and the applicator may abut one another and/or may be in fluid communication with one another. In certain example embodiments, the first porous material may be a fibrous material, and the second porous material may be a sintered porous plastic. In certain example embodiments, the first porous material may have a first porosity, the second porous material may have a second porosity, and the first porosity may be greater than the second porosity.

According to still another aspect, a hair brush may include a body, a number of bristles extending away from the body, and a replaceable cartridge removably attached to the body. The cartridge may include a housing, a first porous member positioned at least partially within the housing, a hair care treatment loaded in the first porous member, and a second porous member positioned at least partially within the housing. The second porous member may be configured to apply the hair care treatment to the hair of a user.

In certain example embodiments, the first porous member may be formed of a first material having a first porosity, the second porous member may be formed of a second material having a second porosity, and the first porosity may be greater than the second porosity. In certain example embodiments, the hair care treatment may include at least one of a hair oil, a hair conditioner, a hair serum, or a hair dye.

These and other example embodiments of the disclosure are described in more detail through reference to the accompanying drawings in the detailed description that follows. This brief overview, including section titles and corresponding summaries, is provided for the reader's convenience and is not intended to limit the scope of the claims or the preceding sections. Furthermore, the techniques described above and below may be implemented in a number of ways and in a number of contexts. Several example implementations and contexts are provided with reference to the accompanying drawings, as described below in more detail. However, the following implementations and contexts are but a few of many.

Certain components and features of the hair brush may be described herein with reference to example embodiments illustrated in the drawings; however, such components and features are not limited to the example embodiments illustrated in the drawings. Certain components and features of the hair brush may be described herein as having a length extending relative to an x-axis, a width extending relative to a y-axis, and/or a height or thickness extending relative to a z-axis. The respective axes are shown in the drawings with respect to the hair brush or components thereof.

Certain components and features of the hair brush may be described herein using the terms “top,” “bottom,” “front,” “back,” or “side.” It will be understood that these terms are used to describe a relative position of a component or feature of the hair brush when the hair brush is in a particular orientation, such as an orientation shown in the drawings. Certain relationships between components or features of the hair brush may be described herein using the terms “above,” “below,” “in front of,” or “behind.” It will be understood that these terms are used to describe a relative relationship between two or more components or features of the hair brush when the hair brush is in a particular orientation, such as an orientation shown in the drawings.

Certain components and features of the hair brush may be described herein using the terms “first,” “second,” “third,” etc. These terms are used only to distinguish one component or feature from another identical or similar component or feature. For example, a “first” component or feature could be termed a “second” component or feature, and, similarly, a “second” component or feature could be termed a “first” component or feature, without departing from the scope of the disclosure. Additionally, as used herein the term “and/or” includes any and all combinations of one or more of the associated listed items.

Certain dimensions or properties of components and features of the hair brush may be described herein using the term “approximately.” As used herein, the term “approximately” indicates that each of the described dimensions is not a strict boundary or parameter and does not exclude functionally similar variations therefrom. Unless context or the description indicates otherwise, the use of the term “approximately” in connection with a numerical parameter indicates that the numerical parameter includes variations that, using mathematical and industrial principles accepted in the art (e.g., rounding, measurement or other systematic errors, manufacturing tolerances, etc.), would not vary the least significant digit.

Example Embodiments

FIGS. 1A-1Z illustrate a hair brush 100 (which also may be referred to as a “hair-styling implement,” a “hair treatment implement,” or a “brush”) as well as individual components and features of the hair brush 100 in accordance with one or more example embodiments of the disclosure. The hair brush 100 may be used in various applications to store a hair care treatment and to apply the hair care treatment to a user's hair while brushing the hair. The hair care treatment may include one or more hair oils, hair conditioners, hair serums, hair dyes, or other substances used to treat and/or style a user's hair. As described below, the hair brush 100 may include a removable cartridge configured to store and apply a hair care treatment to the hair of a user during use of the brush. When a supply of the hair care treatment stored in the cartridge is depleted, the cartridge may be removed from the hair brush, and a new cartridge, preloaded with hair care treatment, may be attached to the brush 100 for subsequent use. As compared to certain existing hair brushes for applying a hair care treatment to a user's hair, embodiments of the hair brush 100 may inhibit leakage or other undesirable release of the hair care treatment from the brush 100, may provide a stable and consistent delivery rate of the hair care treatment from the brush 100 over a life of a supply of the hair care treatment, may provide even distribution of the hair care treatment throughout a user's hair, and/or may provide a straightforward and simple-to-operate mechanism for loading and reloading the brush 100 with a supply of hair care treatment.

As shown in FIGS. 1A-1Z, the example hair brush 100 may have a generally elongated shape, although any other known shapes for a hair brush may be used. The hair brush 100 may have a length L_(B) extending in a direction of a longitudinal axis A_(L) of the brush 100, a width W_(B) extending in a direction of a first transverse axis A_(T1) perpendicular to the longitudinal axis A_(L) of the brush 100, and a height H_(B) extending in a direction of a second transverse axis A_(T2) perpendicular to each of the longitudinal axis A_(L) and the first transverse axis A_(T1) of the brush 100. As shown, the hair brush 100 may have a first end 101 (which also may be referred to as a “proximal end” or a “handle end”) and a second end 102 (which also may be referred to as a “distal end” or a “head end”) positioned opposite one another in the direction of the longitudinal axis A_(L) of the brush 100. The hair brush 100 also may have a first side 103 (which also may be referred to as a “first lateral side”) and a second side 104 (which also may be referred to as a “second lateral side”) positioned opposite one another in the direction of the first transverse axis A_(T1) of the brush 100. Further, the hair brush 100 may include a third side 105 (which also may be referred to as a “top side” or a “front side”) and a fourth side 106 (which also may be referred to as a “bottom side” or a “back side”) positioned opposite one another in the direction of the second transverse axis A_(T2) of the brush 100. The hair brush 100 may include a number of components attached, either fixedly or removably, to one another to form the brush 100. In certain example embodiments, as shown, the hair brush 100 may include a body 110, one or more latches 130, a face plate 140, a door 150, and a cartridge 170. In other example embodiments, one or more of these components may be omitted from and/or additional components may be included in the hair brush 100. It will be appreciated that FIGS. 1A-1Z illustrate merely one example embodiment of the hair brush 100 and that various other configurations of the hair brush 100 and components thereof may be used.

As shown in FIGS. 1A-1F, the body 110 (which also may be referred to as a “brush body” or a “frame”) may have a generally elongated shape extending in the direction of the longitudinal axis A_(L) of the brush 100. The body 110 may be configured to support other components of the brush 100, such as the latches 130, the face plate 140, the door 150, and the cartridge 170, and to allow a user to easily grasp and manipulate the brush 100. Various shapes of the body 110 may be used to provide structural support of the other components and to allow for ergonomic handling of the brush 100 by a user. In certain example embodiments, as shown, the body 110 may include a handle 111 (which also may be referred to as a “brush handle”) and a head 112 (which also may be referred to as a “brush head”) attached to one another. The handle 111 may extend from the first end 101 of the brush 100 to the head 112, and the head 112 may extend from the second end 102 of the brush 100 to the handle 111, although other configurations of the handle 111 and the head 112 may be used. In some example embodiments, the handle 111 and the head 112 may be integrally formed with one another. In other example embodiments, the handle 111 and the head 112 may be separately formed and attached, either fixedly or removably, to one another. In some example embodiments, the handle 111 and the head 112 may be formed of a plastic, although other materials, such as metals or composites, may be used.

The handle 111 may have an elongated, generally cylindrical shape, as shown, although other shapes of the handle 111 may be used. In certain example embodiments, at least a portion of the handle 111 may be hollow. The handle 111 may include an open end 113 positioned about the first end 101 of the brush 100 and configured to receive at least a portion of a plug 114 therein. The plug 114 may be configured to cover the open end 113 of the handle 111 and to facilitate hanging of the brush 100 during periods of non-use. For example, the plug 114 may include a hole 115 defined therein and configured to receive a hook or other means for supporting the brush 100 therethrough. In some example embodiments, the plug 114 may be formed of a plastic, although other materials, such as metals or composites, may be used. In certain example embodiments, the plug 114 may be omitted, and the handle 111 may include a hole defined therein and configured to facilitate hanging of the brush 100. In some example embodiments, the handle 111 may be omitted, and a user may simply grasp the head 112 of the body 110 to use and manipulate the brush 100. Other features and functionality of the handle 111 will be appreciated from the corresponding figures and the described function of the handle 111 provided herein.

The head 112 may have an elongated oval shape, as shown, although other shapes of the head 112 may be used, such as a paddle shape or a cylindrical shape. As described below, the head 112 may be configured to support and cooperate with the latches 130, the face plate 140, the door 150, and the cartridge 170. As shown in FIGS. 1A-1F, the head 112 may include a number of features for supporting and cooperating with these components. For example, the head 112 may include one or more pockets 116 (which also may be referred to as “latch pockets” or “receptacles”) for receiving the one or more latches 130 therein. According to the illustrated embodiment, the head 112 may include a first pocket 116 a and a second pocket 116 b configured to receive the respective latches 130 therein. As shown in FIG. 1E, the pockets 116 may extend from the top side of the head 112 toward the bottom side of the head 112. In this manner, the pockets 116 may be open along the top side of the head 112 for insertion of the latches 130 therein. In some example embodiments, as shown, the pockets 116 may extend from the top side of the head 112 to an intermediate wall 117 of the head 112. As shown, the first pocket 116 a and the second pocket 116 b may be spaced apart from one another in the direction of the first transverse axis A_(T1) of the brush 100. As described below, the pockets 116 and the overall head 112 may be configured to allow the latches 130 to move within the pockets 116 such that the latches 130 cooperate with mating features of the head 112, the face plate 130, the door 150, and the cartridge 170. In particular, the latches 130 may be able to move toward one another and away from one another in the direction of the first transverse axis A_(T1) of the brush 100. As shown, the head 112 may include a number of inner walls 118 and a number of outer walls 119 configured to limit movement of the latches 130 within the respective pockets 116. In particular, the inner walls 118 may limit movement of the latches 130 toward one another, and the outer walls 119 may limit movement of the latches 130 away from one another. The head 112 also may include a number of end walls 121 configured to prevent or inhibit movement of the latches 130 in the direction of the longitudinal axis A_(L) of the brush 100. As shown, each pocket 116 may be defined by the respective inner walls 118, outer wall 119, and end walls 121 positioned thereabout.

As shown in FIGS. 1C and 1E, the head 112 also may include a first recess 122 for receiving at least a portion of the face plate 140 therein. The first recess 122 may extend from the top side of the head 112 toward the bottom side of the head 112. In this manner, the first recess 122 may be open along the top side of the head 112 for insertion of the face plate 140 therein. In some example embodiments, as shown, the first recess 122 may include a first groove 123 extending along an outer perimeter of the first recess 122 and toward the bottom side of the head 112. As described below, the first groove 123 may be configured to receive a mating lip of the face plate 140 therein. The head 112 also may include a pair of first notches 124 positioned below and in communication with the first recess 122. As described below, the first notches 124 may be configured to receive mating tabs of the face plate 140 therein.

As shown in FIGS. 1D and 1F, the head 112 also may include a second recess 125 for receiving at least a portion of the door 150 therein. The second recess 125 may extend from the bottom side of the head 112 toward the top side of the head 112. In this manner, the second recess 125 may be open along the bottom side of the head 112 for insertion of the door 150 therein. In some example embodiments, as shown, the second recess 125 may extend from the bottom side of the head 112 to the intermediate wall 117 of the head 112. In some example embodiments, as shown, the second recess 125 may include a second groove 126 extending along an outer perimeter of the second recess 125 and toward the top side of the head 112. As described below, the second groove 126 may be configured to receive a mating lip of the door 150 therein. The head 112 also may include a pair of second notches 127 and a third notch 128 positioned above and in communication with the second recess 125. As described below, the second notches 127 may be configured to receive mating tabs of the door 150 therein, and the third notch 128 may be configured to receive a mating spring tab of the door 150 therein.

As shown in FIGS. 1C-1F, the head 112 also may include an opening 129 for receiving at least a portion of the cartridge 170 therein. The opening 129 may extend from the top side of the head 112 to the bottom side of the head 112. In this manner, the opening 129 may extend through the head 112 and be open along both the top side and the bottom side thereof. In one example, shape of the opening 129 may generally correspond to the shape of at least a portion of the cartridge 170. In certain embodiments, as shown, the opening 129 may have an elongated shape extending in the direction of the longitudinal axis A_(L) of the brush 100, with parallel sides and rounded ends. In some embodiments, the opening 129 may be defined partially by the inner walls 118 of the head 112. As shown, the opening 129 may be in communication with each of the pockets 116. In particular, along each side of the opening 129, the respective inner walls 118 may be spaced apart from one another in the direction of the longitudinal axis A_(L) of the brush 100, such that the opening 129 is in communication with the pockets 116. In this manner, respective portions of the latches 130 may extend into the opening 129, as described below. Other features and functionality of the head 112 will be appreciated from the corresponding figures and the described function of the head 112 provided herein.

As shown in FIGS. 1G-1L, the one or more latches 130 (which also may be referred to as “spring latches” or “clips”) may have a generally elongated shape extending in the direction of the longitudinal axis A_(L) of the brush 100. According to the illustrated embodiment, the brush 100 may include a first latch 130 a positioned at least partially within the first pocket 116 a, and a second latch 130 b positioned at least partially within the second pocket 116 b. In other example embodiments, the brush 100 may include only a single latch 130 or more than two latches 130. As described below, the latches 130 may be configured to releasably secure the cartridge 170 with respect to the body 110 of the brush 100. In certain example embodiments, as shown, the first latch 130 a and the second latch 130 b may be identical to one another, although different configurations of the latches 130 a, 130 b may be used in other embodiments. Each latch 130 may include a main body 131 and one or more springs 132 (which also may be referred to as “spring arms” or “arms”) extending from the main body 131. In certain example embodiments, as shown, each latch 130 may include a pair of springs 132 positioned about opposite ends of the latch 130. The springs 132 may be formed as leaf springs extending at least partially away from the main body 131. In certain example embodiments, as shown, each spring 132 may include a curved portion 133 and a linear portion 134. The curved portion 133 may extend at least partially inward toward the main body 131, and the linear portion 134 may extend at least partially outward away from the main body 131. In certain example embodiments, as shown, the main body 131 and the springs 132 may be integrally formed with one another. In other example embodiments, the main body 131 and the springs 132 may be separately formed and attached, either fixedly or removably, to one another. In still other embodiments, the main body 131 and the springs 132 may be provided as separate components that are not attached to one another. In some example embodiments, each latch 130 may be formed of a plastic, although other materials, such as metals or composites, may be used.

As described above, the latches 130 may be configured to move within the respective pockets 116 of the head 112. In particular, the latches 130 may be movable relative to the head 112 and to one another in the direction of the first transverse axis A_(T1) of the brush 100. The latches 130 may be movable between an unlocked position, in which the latches 130 are spaced apart from one another by a first distance in the direction of the first transverse axis A_(T1), and a locked position in which the latches 130 are spaced apart from one another by a second distance less than the first in the direction of the first transverse axis A_(T1). In certain example embodiments, as shown, the springs 132 of the latches 130 may bias the latches 130 toward the unlocked position. In particular, the springs 132 may engage the respective inner walls 118 of the head 112 such that the latches 130 are biased toward the unlocked position. As described below, the latches 130 may be moved from the unlocked position toward the locked position by interacting with mating features of the door 150. In certain embodiments, as shown, each latch 130 may include one or more protrusions 135 positioned along the bottom side of the latch 130. Although the illustrated embodiment includes a single protrusion 135, any number of protrusions 135 may be used. The protrusion 135 may be formed as an elongated rib extending in the direction of the longitudinal axis A_(L) of the brush 100, although other shapes and configurations of the protrusion 135 may be used. As shown, the protrusion 135 may include a ramped surface 136 extending at an acute angle relative to the longitudinal axis A_(L) of the brush 100. As described below, the protrusion 135, including the ramped surface 136 thereof, may be configured to engage mating features of the door 150 to facilitate movement of the latches 130 from the unlocked position toward the locked position. In certain embodiments, as shown, each latch 130 may include one or more pockets 137 positioned along the bottom side of the latch 130. Although the illustrated embodiment includes four pockets 137, any number of pockets 137 may be used. The pockets 137 may be positioned adjacent to or near the protrusion 135 and may extend toward the top side of the latch 130. Each adjacent pair of the pockets 137 may be spaced apart from one another by a rib 138 of the latch 130. As described below, the pockets 137 may be configured to receive mating features of the door 150 therein to maintain the latches 130 in the locked position. Other features and functionality of the latches 130 will be appreciated from the corresponding figures and the described function of the latches 130 provided herein.

As shown in FIGS. 1A, 1B, and 1M-1O, the face plate 140 (which also may be referred to as a “top cover,” a “front cover,” or a “cover”) may have an elongated oval shape, as shown, although other shapes of the face plate 140 may be used, such as a paddle shape, an arcuate shape, a cylindrical shape, or a partial cylindrical shape. The face plate 140 may be configured to cover the latches 130 and to maintain the latches 130 at least partially within the respective pockets 116 of the head 112. As shown in FIGS. 1A and 1B, a number of bristles 141 may be attached to the face plate 140 and may extend outwardly from the top side of the face plate 140 and away from the head 112 of the body 110. Any number of bristles 141 may be used, and the bristles 141 may be arranged in various configurations along the face plate 140 to facilitate brushing of a user's hair. As shown, the face plate 140 may include an opening 142 for receiving at least a portion of the cartridge 170 therein. The opening 142 may extend from the top side of the face plate 140 to the bottom side of the face plate 140. In this manner, the opening 142 may extend through the face plate 140 and be open along both the top side and the bottom side thereof. The shape of the opening 142 may generally correspond to the shape of at least a portion of the cartridge 170. In certain embodiments, as shown, the opening 142 may have an elongated shape extending in the direction of the longitudinal axis A_(L) of the brush 100, with parallel sides and rounded ends. In some example embodiments, the face plate 140 may be formed of a plastic, although other materials, such as metals or composites, may be used.

The face plate 140 may include a number of features configured to cooperate with the head 112, the latches 130, and the cartridge 170. For example, the face plate 140 may include a lip 143 positioned along the bottom side of the face plate 140 and extending along the outer perimeter thereof. The lip 143 may be configured to be positioned at least partially within the first groove 123 of the head 112 when the face plate 140 is positioned at least partially within the first recess 122 of the head 112. The face plate 140 also may include a pair of tabs 144 positioned along the bottom side of the face plate 140 at or near one end thereof. The tabs 144 may be configured to be positioned at least partially within the first notches 124 of the head 112, respectively, when the face plate 140 is positioned at least partially within the first recess 122 of the head 112. In certain example embodiments, the face plate 140 may be fixedly attached to the head 112, such as by ultrasonic welding, one or more adhesives, one or more fasteners, or other means of attachment. In other example embodiments, the face plate 140 may be removably attached to the head 112.

The face plate 140 also may include a rim 145 positioned along the bottom side of the face plate 140 and extending along the outer perimeter of the opening 142. In this manner, the rim 145 may define at least a portion of the opening 142. The shape of the rim 145 may generally correspond to the shape of the opening 142 and the shape of at least a portion of the cartridge 170. When the face plate 140 is attached to the head 112, the rim 145 may be positioned at least partially within the opening 129 of the head, as shown. In this manner, the rim 145 may at least partially surround the cartridge 170 such that the rim 145 supports and maintains a position and orientation of the cartridge 170 relative to the face plate 140. In certain example embodiments, as shown, the rim 145 may include a pair of intermediate portions 146 positioned along the respective sides of the rim 145 and extending laterally outward. When the face plate 140 is attached to the head 112, the intermediate portions 146 of the rim 145 may be positioned at least partially between the respective inner walls 118 of the head 112 in the direction of the longitudinal axis A_(L) of the brush 100. In this manner, the intermediate portions 146 of the rim 145, along with the inner walls 118 of the head 112, may be configured to limit movement of the latches 130 toward one another in the direction of the first transverse axis A_(T1) of the brush 100.

The face plate 140 also may include a number of ribs 147 positioned along the bottom side of the face plate 140 and extending away from the rim 145. In certain example embodiments, as shown, the ribs 147 may extend in the direction of the first transverse axis A_(T1) of the brush 100. The ribs 147 may be configured to engage the top sides of the respective latches 130 when the face plate 140 is attached to the head 112. In this manner, the ribs 147 may be configured to maintain the latches 130 at least partially within the respective pockets 116 and to prevent or inhibit movement of the latches 130 in the direction of the second transverse axis A_(T2) of the brush 100. Further, the ribs 147 may be configured to guide movement of the latches 130 between the unlocked position and the locked position while minimizing friction between the latches 130 and the face plate 140. Any number of the ribs 147 may be used, and the ribs 147 may be arranged in various configurations. Other features and functionality of the face plate 140 will be appreciated from the corresponding figures and the described function of the face plate 140 provided herein.

As shown in FIGS. 1A, 1B, and 1P-1R, the door 150 (which also may be referred to as a “bottom cover,” a “back cover,” or a “cover”) may have an elongated oval shape, as shown, although other shapes of the door 150 may be used, such as a paddle shape, an arcuate shape, or a partial cylindrical shape. The door 150 may be configured to cover the latches 130 and the cartridge 170 along the bottom side of the brush 100 and to maintain the latches 130 in the locked position. In some example embodiments, the door 150 may be formed of a plastic, although other materials, such as metals or composites, may be used. The door 150 may include a number of features configured to cooperate with the head 112, the latches 130, and the cartridge 170. For example, the door 150 may include a lip 151 positioned along the top side of the door 150 and extending along the outer perimeter thereof. The lip 151 may be configured to be positioned at least partially within the second groove 126 of the head 112 when the door 150 is positioned at least partially within the second recess 125 of the head 112. The door 150 also may include a pair of tabs 152 positioned along the top side of the door 150 at or near one end thereof. The tabs 152 may be configured to be positioned at least partially within the second notches 127 of the head 112, respectively, when the door 150 is positioned at least partially within the second recess 125 of the head 112. The door 150 also may include a spring tab 153 positioned along the top side of the door 150 at or near a second end thereof opposite the tabs 152. The spring tab 153 may be configured to be positioned at least partially within the third notch 128 of the head 112 when the door 150 is positioned at least partially within the second recess 125 of the head 112. The spring tab 153 may be resiliently deformed or deflected between a locked position, in which the spring tab 153 securely engages the head 112 about the third notch 128 and prevents removal of the door 150 from the head 112, and an unlocked position, in which the spring tab 153 disengages the head 112 and allows removal of the door 150 from the head 112. In this manner, the door 150 may be removably attached to the head 112 by the tabs 152 and the spring tab 153 releasably engaging the mating features of the head 112. In certain example embodiments, the door 150 may movably attached to the head 112, for example by a hinge. In this manner, the door 150 may be pivoted or otherwise moved, relative to the head 112, between a closed position in which the door 150 is positioned at least partially within the second recess 125 of the head 112 and an open position in which the door 150 is positioned at least partially outside of the second recess 125. Various other means of attaching the door 150 to the head 112 and/or moving the door 150 relative to the head 112 may be used.

The door 150 also may include a number of first protrusions 154 positioned along the top side of the door 150 and extending therefrom in the direction of the second transverse axis A_(T2) of the brush 100. The first protrusions 154 may be configured to cooperate with the head 112 and the latches 130. In certain example embodiments, as shown, the door 150 may include a first set of the first protrusions 154 and a second set of the first protrusions 154 spaced apart from one another in the direction of the first transverse axis A_(T1) of the brush 100. In this manner, the first set of the first protrusions 154 may be configured to engage and interact with the first latch 130 a, and the second set of the first protrusions 154 may be configured to engage and interact with the second latch 130 b. Each first protrusion 154 may include a ramped surface 155 positioned along a first side thereof and extending at an acute angle relative to the longitudinal axis A_(L) of the brush 100. As shown, the ramped surface 155 may be configured to engage the ramped surface 136 of the respective latch 130 as the door 150 is inserted into the second recess 125 of the head 112 (i.e., as the door 150 is attached to the head 112). In particular, the ramped surface 155 of the first protrusion 154 may engage the ramped surface 136 of the respective latch 130 and cause the respective latch 130 to move to the locked position as the door 150 is attached to the head 112. In this manner, the engagement between the ramped surfaces 155, 136 may overcome the biasing forces provided by the springs 132 of the latch 130. Each first protrusion 154 also may include a locking surface 156 positioned along the first side thereof and extending in the direction of the second transverse axis A_(T2) of the brush 100. As shown, the locking surface 156 may be configured to engage a mating surface of the respective latch 130 when the door 150 is positioned within the second recess 125 of the head 112 (i.e., when the door 150 is attached to the head 112). In particular, the locking surface 156 of the first protrusion 154 may engage the mating surface of the respective latch 130 and cause the respective latch 130 to be maintained in the locked position when the door 150 is attached to the head 112. In this manner, the engagement between the locking surface 156 and the mating surface of the latch 130 may maintain the springs 132 of the latch 130 in a deflected state. Each first protrusion 154 also may include a notch 157 positioned along a second side thereof opposite the first side. As shown, the notch 157 may be configured to receive a portion of the intermediate wall 117 of the head 112 therein. In this manner, the notch 157 and the intermediate wall 117 may limit insertion of the door 150 into the second recess 125 of the head 112, thereby functioning as a stop and preventing over-insertion of the door 150 with respect to the head 112.

The door 150 also may include a number of second protrusions 158 positioned along the top side of the door 150 and extending therefrom in the direction of the second transverse axis A_(T2) of the brush 100. The second protrusions 158 may be configured to cooperate with the cartridge 170. In certain example embodiments, as shown, the door 150 may include a first set of the second protrusions 158 and a second set of the second protrusions 158 spaced apart from one another in the direction of the longitudinal axis A_(L) of the brush 100. In this manner, the first set of the second protrusions 158 may be configured to engage and interact with a first portion of the cartridge 170 closer to a first end of the cartridge 170, and the second set of the second protrusions 158 may be configured to engage and interact with a second portion of the cartridge 170 closer to an opposite second end of the cartridge 170. As shown, the second protrusions 158 may engage and support the bottom side of the cartridge 170, such that the cartridge 170 is secured between the second protrusions 158 of the door 150 and the rim 145 of the face plate 140. In this manner, the second protrusions 158 and the rim 145 may maintain a position of the cartridge 170 relative to the head 112 in the direction of the second transverse axis A_(T2) of the brush 100 when the door 150 is attached to the head 112. Other features and functionality of the door 150 will be appreciated from the corresponding figures and the described function of the door 150 provided herein.

As shown in FIGS. 1A, 1B, and 1S-1Z, the removable and replaceable cartridge 170 (which also may be referred to as a “hair care treatment cartridge,” a “refill cartridge,” or a “refill”) may have an elongated shape, as shown, although other shapes of the cartridge 170 may be used. The cartridge 170 may include a number of components for storing a hair care treatment, applying the hair care treatment to a user's hair, and/or cooperating with the body 110, the latches 130, the face plate 140, and/or the door 150. In certain example embodiments, as shown, the cartridge 170 may include a housing 171, a reservoir 172, an applicator 173, and a cover 174. As described below, the cartridge 170 may be removably attached to the body 110 of the brush 100. In this manner, the cartridge 170 may be attached to the body 110 for delivery of a hair care treatment during use of the brush 100, removed from the body 110 when a supply of the hair care treatment is depleted, and either replaced with a new cartridge 170 or refilled with a new supply of hair care treatment for further use. In certain example embodiments, the cartridge 170 may be preloaded with a hair care treatment. In certain example embodiments, the cartridge 170 may be filled and/or refilled with a hair care treatment for subsequent use.

As shown in FIGS. 1S-1W, the housing 171 (which also may be referred to as a “cartridge housing” or a “case”) may have an elongated shape, as shown, although other shapes of the housing 171 may be used. The housing 171 may be configured to contain at least a portion of the reservoir 172 and at least a portion of the applicator 173 therein. In this manner, the housing 171 may protect the reservoir 172 and the applicator 173 and provide a support structure for mounting the reservoir 172 and the applicator 173 with respect to the body 110. The housing 171 also may be configured to engage and cooperate with mating portions of the body 110, the latches 130, the face plate 140, and the door 150. In this manner, the housing 171 may facilitate removable attachment of the cartridge 170 with respect to the body 110. In some example embodiments, the housing 171 may be formed of a plastic, although other materials, such as metals or composites, may be used. In some example embodiments, the housing 171 may be formed of a non-porous plastic. In this manner, the housing 171 may prevent a hair care treatment from passing through the walls of the housing 171. In certain example embodiments, the housing 171 may include multiple components that are attached, either fixedly or removably, to one another. For example, the housing 171 may include a first housing portion 171 a and a second housing portion 171 b that are separately formed and attached to one another.

The first housing portion 171 a (which also may be referred to as a “bottom housing portion”) may be configured to receive at least a portion of the reservoir 172 therein. As shown, the first housing portion 171 a may define an interior space 176 configured to receive at least a portion of the reservoir 172 therein. The interior space 176 may extend from the top side toward the bottom side of the first housing portion 171 a. In certain example embodiments, as shown, the interior space 176 may be open along the top side of the first housing portion 171 a and closed by a bottom wall 177 along the bottom side of the of the first housing portion 171 a. In this manner, the reservoir 172 may be inserted into the interior space 176 from the top side of the first housing portion 171 a and supported within the interior space 176 by the bottom wall 177. In certain example embodiments, the first housing portion 171 a may include a flange 178 extending along at least a portion of the bottom side of the first housing portion 171 a. As described below, the flange 178 may be configured to engage a mating portion of the second housing portion 171 b upon assembly of the cartridge 170, to engage a mating portion of the cover 174 when the cover 174 is attached to the housing 171, and to engage mating portions of the body 110 and the face plate 140 when the cartridge 170 is attached to the body 110. The first housing portion 171 a also may include a number of features for securely attaching the first housing portion 171 a to the second housing portion 171 b. For example, the first housing portion 171 a may include one or more tabs 179 positioned along the bottom side thereof and configured to engage mating apertures of the second housing portion 171 b. Other features and functionality of the first housing portion 171 a will be appreciated from the corresponding figures and the described function of the first housing portion 171 a provided herein.

The second housing portion 171 b (which also may be referred to as a “top housing portion”) may be configured to receive at least a portion of the reservoir 172 and at least a portion of the applicator 173 therein. As shown, the second housing portion 172 b may define an interior space 181 configured to receive at least a portion of the reservoir 172 and at least a portion of the applicator 173 therein. The interior space 181 also may be configured to receive at least a portion of the first housing portion 171 a therein. The interior space 181 may extend from the top side to the bottom side of the second housing portion 171 b. In this manner, the interior space 181 may be open along each of the top side and the bottom side of the second housing portion 171 b. As shown, the second housing portion 171 b may include a lip 182 positioned along the top side thereof and extending along an inner perimeter of the second housing portion 171 b. As described below, the lip 182 may be configured to engage a mating portion of the applicator 173 upon assembly of the cartridge 170, such that a portion of the applicator 173 is secured between the first housing portion 171 a and the second housing portion 171 b. In some example embodiments, the second housing portion 171 b also may include a number of features for securely attaching the second housing portion 171 b to the first housing portion 171 a. For example, the second housing portion 171 b may include one or more tabs 183 positioned along the bottom side thereof. Each tab 183 may include an aperture 184 defined therein and configured to receive a respective tab 179 of the first housing portion 171 a, as shown. The tabs 183 of the second housing portion 171 b and the tabs 179 of the first housing portion 171 a may be configured to provide a snap-fit connection between the first housing portion 171 a and the second housing portion 171 b. Alternatively, the first housing portion 171 a and the second housing portion 171 b may include other types of features for securely attaching to one another to provide a snap-fit connection or other type of connection therebetween. In other example embodiments, the first housing portion 171 a and the second housing portion 171 b may be securely attached to one another by one or more glues or adhesives, by welding, or by other means of attachment. Other features and functionality of the second housing portion 171 b will be appreciated from the corresponding figures and the described function of the second housing portion 171 b provided herein.

As shown in FIGS. 1S-1W, the reservoir 172 (which also may be referred to as a “cartridge reservoir,” a “porous reservoir,” or a “first porous member”) may have an elongated rectangular shape, as shown, although other shapes of the reservoir 172 may be used. The reservoir 172 may be configured to store a supply of a hair care treatment therein. As shown, the reservoir 172 may be positioned at least partially within the interior space 176 of the first housing portion 171 a. In certain example embodiments, as shown, a height of the reservoir 172 may be slightly greater than a height of the interior space 176. In this manner, upon assembly of the cartridge 170, the reservoir 172 may be slightly compressed by the applicator 173 such that the reservoir 172 is positioned entirely within the interior space 176. The reservoir 172 may be formed of a porous material configured to absorb and store the hair care treatment within the pores thereof. In some example embodiments, the reservoir 172 may be formed of a low-density fibrous material, although other types of porous materials may be used. In this manner, the reservoir 172 may function like a sponge, absorbing and storing the hair care treatment for delivery to the applicator 173. Although the illustrated embodiment includes only a single reservoir 172, the cartridge 170 may include multiple reservoirs 172 in other example embodiments. Other features and functionality of the reservoir 172 will be appreciated from the corresponding figures and the described function of the reservoir 172 provided herein.

As shown in FIGS. 1S-1W, the applicator 173 (which also may be referred to as a “cartridge applicator,” a “porous applicator,” or a “second porous member”) may have an elongated shape, as shown, although other shapes of the applicator 173 may be used. The applicator 173 may be configured to receive the hair care treatment from the reservoir 172 and to apply the hair care treatment to a user's hair during use of the brush 100. As shown, the applicator 173 may be positioned at least partially within the interior space 181 of the second housing portion 171 b and may extend outwardly from the second housing portion 171 b. In certain example embodiments, as shown, the applicator 173 may include a base 186 and a number of protrusions 187 extending from the base 186. The base 186 may be positioned along the bottom side of the applicator 173, and the protrusions 187 may be positioned along the top side of the applicator 173. As shown, the base 186 may be configured to engage the first housing portion 171 a, the second housing portion 171 b, and the reservoir 172. The base 186 may include a flange 188 positioned along the bottom side of the applicator 173 and extending along at least a portion of the outer perimeter thereof. As shown, the flange 188 may be configured to engage the top of the first housing portion 171 a and the lip 182 of the second housing portion 171 b such that the flange 188 is secured therebetween upon assembly of the cartridge 170. In certain example embodiments, as shown, the protrusions 187 may be spaced apart from one another in the direction of the longitudinal axis of the applicator 173. In this manner, the protrusions 187 may engage and pass through a user's hair during use of the brush 100. In certain example embodiments, as shown, each protrusion 187 may have a conical shape with a rounded tip, although other shapes of the protrusions 187 may be used. In some example embodiments, the protrusions 187 may be omitted, such that a smooth top surface of the base 186 is configured to engage a user's hair during use of the brush 100. The applicator 173 may be formed of a porous material configured to absorb the hair care treatment within the pores thereof and to release the hair care treatment when the applicator 173 engages the hair of a user. In some example embodiments, the applicator 173 may be formed of a sintered porous plastic, although other types of porous materials may be used. Alternative porous materials for the applicator 173 may include a foam, a fibrous material, a natural material, a fabric, a porous membrane, or a porous film configured to absorb and release the hair care treatment. In this manner, the applicator 173 may receive the hair care treatment from the reservoir 172 and then apply the hair care treatment to a user's hair upon contact therewith. Although the illustrated embodiment includes only a single applicator 173, the cartridge 170 may include multiple applicator 173 in other example embodiments. Other features and functionality of the applicator 173 will be appreciated from the corresponding figures and the described function of the applicator 173 provided herein.

The respective materials of the reservoir 172 and the applicator 173 may be selected to optimize storage of a particular hair care treatment via the reservoir 172 and delivery of the hair care treatment to a user's hair via the applicator 173. The reservoir 172 may be formed of a first porous material, and the applicator 173 may be formed of a second porous material. In certain example embodiments, the first porous material may be different than the second porous material. For example, the first porous material may be a low-density fibrous material, and the second porous material may be a high-density sintered porous plastic. In certain example embodiments, the first porous material may have different properties or characteristics than the second porous material. For example, the first porous material may have a first porosity, and the second porous material may have a second porosity, wherein the first porosity is greater than the second porosity. The relative porosities of the first porous material and the second porous material may cause the hair care treatment to be drawn from the reservoir 172 into the applicator 173 by capillary action. Further, the relative porosities of the first porous material and the second porous material may cause an amount of the hair care treatment present in the applicator 173 to remain constant or substantially constant throughout a majority of the life of the cartridge 170, and also may allow for all or substantially all of the supply of hair care treatment to be drawn out of the reservoir 172. In certain example embodiments, the first porosity of the reservoir 172 may be within a range of between approximately 59% and approximately 79%, or may be approximately 69%. In certain example embodiments, the second porosity of the applicator 173 may be within a range of between approximately 33% and approximately 53%, or may be approximately 43%. As another example, the first porous material may have a first density, and the second porous material may have a second density, wherein the second density is greater than the first density. In this manner, the reservoir 172 may be optimized for storage of the hair care treatment, and the applicator 173 may be optimized for delivery of the hair care treatment.

As shown in FIGS. 1S-1W, the cover 174 (which also may be referred to as a “cartridge cover” or a “cap”) may have an elongated shape, as shown, although other shapes of the cover 174 may be used. The cover 174 may be configured to receive at least a portion of each of the housing 171, the reservoir 172, and the applicator 173 therein prior to use of the cartridge 170. In this manner, the cover 174 may protect the other components of the cartridge 170 and prevent or inhibit evaporation of the hair care treatment from the reservoir 172 and/or the applicator 173. The cover 174 may be removed from the other components of the cartridge 170 prior to attachment of the cartridge 170 to the body 110 of the brush 100 for use. As shown, the cover 174 may define an interior space 189 configured to receive at least a portion of each of the housing 171, the reservoir 172, and the applicator 173 therein when the cover 174 is attached. The interior space 189 may extend from the bottom side of the cover 174 toward the top side of the cover 174. In this manner, the interior space 189 may be open along the bottom side and closed along the top side of the cover 174. As shown, the cover 174 may include a number of features for removably attaching the cover 174 to the housing 171. In certain example embodiments, as shown, the cover 174 may include one or more ribs 191 positioned on an interior surface of the cover 174 at or near the bottom side thereof. The ribs 191 may be configured to removably engage one or more ribs 192 of the first housing portion 171 a. The ribs 191 of the cover 174 and the ribs 192 of the first housing portion 171 a may form a snap-fit connection between the cover 174 and the housing 171. In other example embodiments, the cover 174 and the housing 171 may include other types of features for engaging one another to removably attach the cover 174 to the housing 171 by a snap-fit connection or other type of connection. In some example embodiments, the cover 174 may be formed of a plastic, although other materials, such as metals or composites, may be used. In some example embodiments, the cover 174 may be formed of a non-porous plastic. In this manner, the cover 174 may prevent a hair care treatment from passing through the walls of the cover 174. In certain example embodiments, as shown, the cover 174 may be formed of a transparent or translucent material to allow for visualization of the other components of the cartridge 170 covered thereby. Other features and functionality of the cover 174 will be appreciated from the corresponding figures and the described function of the cover 174 provided herein.

As described above, the cartridge 170 may include a hair care treatment preloaded in the reservoir 172 and/or the applicator 173. In certain example embodiments, the hair care treatment may include a hair oil, a hair conditioner, a hair serum, a hair dye, and/or other hair treatment or hair-styling substances. In certain example embodiments, the hair care treatment may include no volatile ingredients or minimal volatile ingredients. In this manner, the hair care treatment may have a high concentration of active ingredients and a low evaporation rate. As a result, as compared to certain conventional hair care treatments, the hair care treatment of the cartridge 170 may provide a higher level of performance with a lower amount of the hair care treatment. In certain example embodiments, the hair care treatment may be a natural substance. In other example embodiments, the hair care treatment may be a synthetic substance. The materials, properties, and/or characteristics of the reservoir 172 and the applicator 173 may be selected based at least in part on a viscosity of the hair care treatment. For example, the porosity, the density, and/or the surface area of each of the reservoir 172 and the applicator 173 may be selected based at least in part on the viscosity of the hair care treatment, such that the reservoir 172 and the applicator 173 are configured to consistently deliver the hair care treatment at a predetermined delivery rate during use of the brush 100. In certain example embodiments, the hair care treatment may include a colored substance, such as a colored dye. In this manner, the presence, absence, and/or relative amount of the hair care treatment remaining in the cartridge 170 may be determined by viewing the color of the applicator 173. Accordingly, a change in the color of the applicator 173 may indicate that the cartridge 170 should be replaced with a new cartridge 170 or refilled with a new supply of the hair care treatment. The colored substance of the hair care treatment may be selected such that the hair care treatment does not impart any color to the user's hair when applied thereto.

FIGS. 2A-2F illustrate a method of loading the cartridge 170 of the brush 100 for use. As shown in FIG. 2A, the cover 174 of the cartridge 170 may be removed to expose the applicator 173. For example, the cover 174 may be removed by releasing the snap-fit connection between the cover 174 and the second housing portion 171 b. As shown in FIG. 2B, the door 150 may be removed from the head 112 of the body 110 to expose the opening 129 of the head 112 along the bottom side thereof. For example, the door 150 may be removed by moving the spring tab 153 to the unlocked position, pivoting the door 150 about the hinge connection formed between the tabs 152 of the door 150 and the second notches 127 of the head 112, and then pulling the door 150 away from the head 112. Next, the cartridge 170 may be aligned with and inserted into the opening 129 of the head 112, as shown in FIGS. 2C and 2D. During insertion of the cartridge 170, the cartridge 170 may pass between the latches 130 and be advanced until the housing 171 of the cartridge abuts the respective portions of the head 112 and the face plate 140. Finally, the door 150 may be aligned with and inserted into the second recess 125 of the head 112, as shown in FIGS. 2E and 2F. As the door 150 is inserted into the second recess 125, the tabs 152 of the door 150 may engage the second notches 127 of the head 112, and the spring tab 153 may engage the third notch 128 of the head 112 and assume the locked position therein. Additionally, as the door 150 is inserted into the second recess 125, the first protrusions 154 of the door 150 may engage the protrusions 135 of the respective latches 130 and move the latches 130 from the unlocked position to the locked position to secure the cartridge 170 therebetween. Further, as the door 150 is inserted into the second recess 125, the second protrusions 158 of the door 150 may engage the bottom surface of the cartridge 170 to maintain the cartridge 170 in abutment with the mating portions of the head 112 and the face plate 140. In this manner, attachment of the door 150 to the head 112 of the body 110 may ensure that the cartridge 170 is securely constrained with respect to the body 110 for use. When the supply of the hair care treatment provided in the cartridge 170 becomes depleted, the cartridge 170 may be removed from the body 110 and replaced within a new cartridge 170 in a similar manner.

Although specific embodiments of the disclosure have been described, numerous other modifications and alternative embodiments are within the scope of the disclosure. For example, any of the functionality described with respect to a particular device or component may be performed by another device or component. Further, while specific device characteristics have been described, embodiments of the disclosure may relate to numerous other device characteristics. Further, although embodiments have been described in language specific to structural features and/or methodological acts, it is to be understood that the disclosure is not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as illustrative forms of implementing the embodiments. Conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments could include, while other embodiments may not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more embodiments. 

That which is claimed is:
 1. A hair brush comprising: a body; a plurality of bristles extending away from the body; and a cartridge removably attached to the body, the cartridge comprising: a housing; a reservoir positioned at least partially within the housing and configured to store a hair care treatment therein, the reservoir comprising a first porous material; and an applicator positioned at least partially within the housing and configured to apply the hair care treatment to hair of a user, the applicator comprising a second porous material.
 2. The hair brush of claim 1, wherein the reservoir and the applicator abut one another and are in fluid communication with one another.
 3. The hair brush of claim 1, wherein the first porous material is a fibrous material, and wherein the second porous material is a sintered porous plastic.
 4. The hair brush of claim 1, wherein the first porous material has a first porosity, wherein the second porous material has a second porosity, and wherein the first porosity is greater than the second porosity.
 5. The hair brush of claim 4, wherein the first porosity is within a range of between approximately 59% and approximately 79%, and wherein the second porosity is within a range of between approximately 33% and approximately 53%.
 6. The hair brush of claim 1, wherein the reservoir is positioned entirely within the housing, and wherein the applicator extends out of the housing and away from the body.
 7. The hair brush of claim 6, wherein the applicator comprises a base and a plurality of protrusions extending from the base, wherein the base is positioned at least partially within the housing, and wherein the protrusions are positioned at least partially outside of the housing.
 8. The hair brush of claim 1, further comprising a latch movably positioned within the body and configured to move between an unlocked position in which the latch allows removal of the cartridge from the body and a locked position in which the latch inhibits removal of the cartridge from the body.
 9. The hair brush of claim 8, wherein the latch comprises a main body and a spring, and wherein the spring is configured to bias the latch toward the unlocked position.
 10. The hair brush of claim 8, further comprising a door removably attached to the body, wherein the door is configured to move the latch to the locked position when the door is attached to the body.
 11. The hair brush of claim 10, wherein the door comprises a first protrusion configured to engage a second protrusion of the latch to move the latch to the locked position when the door is attached to the body.
 12. The hair brush of claim 11, wherein the door further comprises a second protrusion configured to engage the cartridge and inhibit movement of the cartridge relative to the body when the door is attached to the body.
 13. The hair brush of claim 1, wherein the cartridge further comprises a hair care treatment loaded in the reservoir, and wherein the hair care treatment comprises at least one of a hair oil, a hair conditioner, a hair serum, or a hair dye.
 14. A cartridge for a hair brush, the cartridge comprising: a housing; a reservoir positioned at least partially within the housing, the reservoir comprising a first porous material; a hair care treatment loaded in the reservoir; and an applicator positioned at least partially within the housing and configured to apply the hair care treatment to hair of a user, the applicator comprising a second porous material.
 15. The cartridge of claim 14, wherein the reservoir and the applicator abut one another and are in fluid communication with one another.
 16. The cartridge of claim 14, wherein the first porous material is a fibrous material, and wherein the second porous material is a sintered porous plastic.
 17. The cartridge of claim 14, wherein the first porous material has a first porosity, wherein the second porous material has a second porosity, and wherein the first porosity is greater than the second porosity.
 18. A hair brush comprising: a body; a plurality of bristles extending away from the body; and a cartridge removably attached to the body, the cartridge comprising: a housing; a first porous member positioned at least partially within the housing; a hair care treatment loaded in the first porous member; and a second porous member positioned at least partially within the housing and configured to apply the hair care treatment to hair of a user.
 19. The hair brush of claim 18, wherein the first porous member is formed of a first material having a first porosity, wherein the second porous member is formed of a second material having a second porosity, and wherein the first porosity is greater than the second porosity.
 20. The hair brush of claim 18, wherein the hair care treatment comprises at least one of a hair oil, a hair conditioner, a hair serum, or a hair dye. 